I posted this patch sometime in Feb08
[url]http://lists.samba.org/archive/samba-technical/2008-February/058102.html[/url]
and I guess it got an Ack but somehow didn't get merged.
So, reposting - any objections?

The Windows versions above Windows 98 (Windows 2000, XP and above
including Samba), support passwords up to 127 characters. NTLM passwords
are limited _only_ in GUI, because the dialog box limits it to 14
characters. So it makes sense for mount.cifs to allow passwords up to
127 characters.